. . "An observable quality (property, characteristic) of a FeatureOfInterest."@en . . . . . . "The height of a tree, the depth of a water body, or the temperature of a surface are examples of observable properties, while the value of a classic car is not (directly) observable but asserted."@en . . "Observable Property"@en . . . . . . . . . . . "An observable quality (property, characteristic) of a FeatureOfInterest."@en .